[gustavo_duarte]

I agree completely on the GH slow down / fail whale type of problems.

I use GH for about 12 hours a day almost every day, between open source and client projects. I face slow downs in the issue tracker, the git repos themselves (I only use command line), and the web interface to browse a project (code, history, pull requests). I notice a slow down about once a day. Some features, like the contributors graph, are always dead slow. About 10-20% of PR merge attempts fail, and I have to click the button again, sometimes multiple times. I see the Unicorn fail page or some Octocat fail page often enough.

It makes me think exactly of what you describe, a combination of Rails perf / scalability and perhaps a lack of strong backend engineering, I'm not sure.

Right now the problems are in the level of a mild annoyance / surprise that a company like GH has these issues. If it gets worse, I would consider moving away. But because I truly love the UI and overall functionality, it's a positive tradeoff for us at the moment.

You're very welcome regarding the YouTrack suggestion.

[Jd]

Yep, we are seeing exactly the same things and have more or less the same response. I've long been a huge Github fan so to think of moving away makes me quite sad, but the frequent chunkiness (even exhibited in things as simple as switching between page 1 and 2 of open issues) causes me a lot of frustration every day. I'm not ready to give up just yet however.